

.item{
  position: relative;
  display: block;
}


.opacity{
  -webkit-animation: opacity 0.3s linear;
  animation: opacity 0.3s linear;
}
@-webkit-keyframes opacity {
  0% {
    opacity:0;
  }
  100% {
    opacity:1;
  }
}
@keyframes opacity {
  0% {
    opacity:0;
  }
  100% {
    opacity:1;
  }
}
